3 ms·

I'm curious why you can't? I'm guessing that seawater permeation would alter the isotope distribution, but I also wonder if the alteration is predictable in som

• ars 12y ago
  Yes, that's exactly it. You can sometimes adjust if the water was constant and you have some other clock you can calibrate to (for example the bottom of the ocean at a specific depth). But if you have water that came and went then the errors are too large.